1 003 5-methyl-7-(2-methylpropyl)-2-(naphthalen-1-ylmethyl)-3-pyridin-4-yl-2h-pyrazolo[3,4-D]pyrimidine-4,6(5h,7h)-dione 1.000 2 KRH 5-methyl-3-(1-methyl-1h-imidazol-5-yl)-7-(2-methylpropyl)-2-(naphthalen-1-ylmethyl)-2h-pyrazolo[3,4-D]pyrimidine-4,6(5h,7h)-dione 0.784